package cn.sofwin.day0105;

import java.util.Scanner;

/**
 * 课堂练习：计算圆的面积
 */
public class Test06 {
    public static void main(String[] args){
        //double radius,area,pi = 3.14;

        Scanner in = new Scanner(System.in);
       /* System.out.println("请输入半径：");
        radius = in.nextDouble();

        area=pi * radius * radius;
        System.out.println("圆的面积为：" + area);*/

    }
}
